Such-n-such color is the NEW black!

"Such-n-such color is the NEW black!" You hear it all the time in fashion. But why is it that black, even though replaced EVERY YEAR, seems to come back and act like it has been the crowd favorite the whole time? For example...last year brown was said to be the new black. This year they say grey is the new black. Now whats up with that? Shouldn't it be grey is the new brown? If last year brown replaced black....shouldn't black be out of the picture and brown be the new color all the other colors try to beat? It only seems logical for this to be the case...yet every year its the same thing over and over again.

Well lets face it...I want answers. Of course I reference one of the best websites...my friend and yours Wikipedia. Here is what Mr. Wiki has to say....

"_____ is the new black" is a catch phrase and snowclone used to indicate the sudden popularity or versatility of an idea at the expense of the popularity of a second idea. It is also the origin of a snowclone of the form "X is the new Y"

HISTORY
The origin of the phrase goes back to Diana Vreeland in 1962 who used the phrase "Pink...(is)...the navy blue of India" meaning that the color pink seemed to be the foundation of the attire there, much like navy blue was the base color of most ensembles in New York City. The phrase is commonly misattributed to Gloria Vanderbilt and a fictional trip to India in the 1960s where she supposedly noted the prevalence of pink in the native garb. In actuality, it was Ms. Vreeland who made the observation when shown a sample of pink fabric from India.[1]
In the late 1970s, the phrase "X is the new neutral" was widely used (culminating in the humorous observation that "It looks like red is the new neutral"). By the early 1980s this had changed to "X is the new black".[1]
Later in the 1980s, the phrase was reappropriated to indicate that other colors (frequently brown, navy blue or grey) were temporarily displacing the position of black in fashion or industrial design; that is a versatile staple that complemented all other aspects, and was generally unobjectionable. The phrase quickly became lampooned for its simplistic nature; The Wall Street Journal soon declared that "White is the new black". It soon degenerated into a complete cliché and is now used in a great variety of contexts, mostly ironic in nature.
The phrase is often generalised to "X is the new Y", where the standard may be almost anything ("the new rock and roll" is a common variant). This makes it an excellent example of the linguistic phenomenon recently dubbed the snowclone, and is so widespread that the British satirical magazine Private Eye chronicles the over-use of the phrase in its column "Neophiliacs".
Because the phrase is so familiar, it is now frequently used in absurd contexts as a signifier instead of as a metaphor.